Expert Review Panels (ERP) are a key part of AOAC INTERNATIONAL's Method Approval Process. Once methods which proport to meet an AOAC® Standard Method Performance Requirements℠ (SMPRs) are submitted, an ERP must judge the method against the SMPR. Methods that best meet the requirements are adopted and designated "First Action" AOAC® Official Methods℠. ERP members must be experts in their fields. They are carefully vetted by the AOAC Official Methods Board.